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| 呼伦贝尔沙地樟子松天然更新苗影响因素的研究 | |
| 引用本文： | 闫德仁,杜敏,王玉华,张宝珠,乔殿学,马青山,常艳.呼伦贝尔沙地樟子松天然更新苗影响因素的研究[J].防护林科技,2012(4):11-13,46. |
| 作者姓名： | 闫德仁 杜敏 王玉华 张宝珠 乔殿学 马青山 常艳 |
| 作者单位： | 1. 内蒙古林业科学研究院,内蒙古呼和浩特,010010 2. 呼伦贝尔市林业研究所 3. 呼伦贝尔市鄂温克旗林业局 |
| 摘 要： | 通过对呼伦贝尔沙地樟子松天然林天然更新苗特征及其影响因素的研究,结果表明:母树密度不同,天然更新苗数量和年龄结构存在明显差异;樟子松天然更新苗年龄结构在时间上具有明显的不连续性,樟子松天然更新苗密度因林分类型的差异明显不同。在疏林地(树龄30 a),平均更新苗密度每2 500 m2为13株,在火烧迹地平均更新苗密度每600 m2为28.5株,樟子松单株样地平均更新苗密度每600 m2为118.8株。不同年龄的天然更新苗保存密度和年平均降水量有显著或极显著关系,且随着林分郁闭度的增加,研究区天然更新苗密度呈现降低的趋势。 |
| 关 键 词： | 呼伦贝尔沙地 樟子松天然林 更新苗 影响因素 |
Influence Factors of Natural Regeneration Seedlings for Pinus sylvestris var. mongolica on Hulunbuir Sandyland |
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| YAN De-ren,DU Min,WANG Yu-hua,ZHANG Bao-zhu,QiAO Dian-xue,MA Qing-shan,CHANG Yan.Influence Factors of Natural Regeneration Seedlings for Pinus sylvestris var. mongolica on Hulunbuir Sandyland[J].Protection Forest Science and Technology,2012(4):11-13,46. | |
| Authors: | YAN De-ren DU Min WANG Yu-hua ZHANG Bao-zhu QiAO Dian-xue MA Qing-shan CHANG Yan |
| Institution: | 1. Academy of Forestry, Inner Mongolia, Huhhot 010010, China;2. Forestry Research Institute of Hulunbuir City ;3 Bureau of Forestry of Ewenki Banner , Hulunbuir City) |
| Abstract: | Traits of natural regeneration seedlings of natural forest of Pinus sylvestris var. mongolica on Hulunbuir sandyland were studied. Result shows that：number and age structure of natural regeneration seedlings significantly different with different densities of seed trees ; age structure of natural regeneration seedlings for Pinus sylvestris var. mongolica has obvious discontinuity in time ; densities of natural regeneration seedlings are obviously different due to differences in forest types. Open woodland （30-year-old tree） , the density of average regeneration seedlings are 13 trees per 2 500 mE ;density of the average regeneration seedlings in the burned area are 28.5 trees per 600 mE ; average density of regeneration seedlings for individual Pinu~ sylvestris var. mongolica in the sample plots are 118.8 trees per 600 m2. Reserved density ＆ mean annual precipitation of natural regeneration seedlings with different ages have significant or very significant relationship; density of natural regeneration seedlings in the study area decrease with the increase of canopy density. |
| Keywords: | Hulunbuir sandyland natural forest of Pinus sylvestris var mongolica regeneration seedlings influence factors |
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